Wall shelf



FIG. 1 is a top, front, and left side perspective view of a wall shelf showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a left side elevational view thereof, the right side being a mirror image of that shown; and

FIG. 7 is a vertical cross-sectional view thereof, taken along line 7--7 of FIG. 4. 

The ornamental design for a wall shelf, as shown and described. 